Magneto-generator.



PATENTED MAY 19, 1903.

G; E. WHEELER.

MAGNETO GENERATOR.

APPLIUATION FILED JUNEIE, 1902.

K0 MODEL.

Quinn for,

Wit mzooeo UNITED STATES latented May 19, 1903.

PATENT OFFICE.

GEORGE E. WHEELER, OF BURLINGTON, IOWA, ASSIGNOR TO MODERN ELECTRIC 00., OF BURLINGTON, IOWA.

MAGNETO-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 728,343, dated May 19, 1903.

' Application filediTune 19. 1902. Serial No. 112,341. (No model) To all whom, it Wtay concern:

Be it known that I, GEORGE E.WHEELER, a

citizen of the United States, residing at Burlington, in the county of Des Moines and State of Iowa, have invented certain new and useful Improvements in Magneto-Generators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to armatures for magnetogenerators and other forms of bipolar machines, and has for its object to provide an armature which is simple of construction, comparatively inexpensive of production, and adapted to be readily taken apart for repairs or rewinding of the armaturespools or wire-holding surfaces.

With these and other objects in view the invention consists of certain novel features of construct-ion, combination, and arrangement of parts, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a plan view of an armature constructed in accordance with my invention. Fig. 2 is a perspective view of the armature frame and spools, the windings being omitted. Fig. 3 is a similar view of the frame minus the spools. Fig. 4 is a cross-section through the laminated core and one of the spools of the frame. Fig. 5 is a vertical longitudinal section through the armature on a line through the center of the spools.

The armature 7 is mounted upon the armature-shaft 8 and comprises a laminated frame formed of a series of strips or pieces 9,- each having a central perforation l0 and a T-headed end 11. These strips or pieces 9 are arranged in parallel relation and are so placed that the T-heads are arranged alternately with the straight or plain ends 12 of the strips at opposite sides of the armature, or, in other words, so that-the headed end of one strip will lie in contact with the plainend of the next adjoining strip at one side of the armature, while the plain end of the first-named strip will lie in contact with the headed end of the other strip at the other side of the armature-,this arrangement prevailing throughout the series, the T-heads thus forming polepieces at the opposite sides of the armature. The strips are connected at their ends by pins or screws 13 and 14, extending transversely throughout the entire series, thus detachably fastening all the strips together, forming a rectangular frame, which is mounted upon the shaft 8 by slipping it endwise upon said shaft, which extends through the central per forations 10. The spools or bobbins 15 fit about the stems of the strips or pieces and are held from outward movement by the T- heads at the opposite sides of the frame and support thearmature-windingsl6. Thesebobbins are of rectangular form to conform to the shape of the frame and are fitted in position at the'time the strips are being assembled by alternately passing the plain ends of the strips through the bores of the bobbins from opposite sides in an obvious manner, so that when the pins or screws 13 and 14: are applied to fasten the strips together the rectangular form of the frame and bobbins will prevent the latter from rotating, while the T-heads will prevent the bobbins from sliding to any material extent on the strips, even in the event of the bores of the spools being made too large to perfectly fit the armature. Thus the secure retention of the bobbins is insured without the use of fastenings, and at the same time the rectangular formation of the bobbins permits'of the use of a greater amount of Wire and obviates slipping. From the foregoing construction it will be readily understood that upon simply detaching the screws 13 and 14 and removing the shaft the strips may be disconnected and the bobbins easily and con- Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principl-e or sacrificing any of the advantages of thisinventi on. j

Having thus described my invention, hat I claim is i 1. 'An armature-frame, comprising parallel T-shaped strips adapted to be intermediately supported upon the armature-shaft, the end of each strip bearing upon the head of the other strip,"and fastenings detachably connecting the strips, substantially as set forth.

2. An armature-frame composed of a plurality of parallel pieces each having a central perforation for the armature-shaft and a T-head at one end, the heads being alternately arranged at opposite sides of the frame, and fastenings detachably connecting the ends of said pieces, substantially as described.

3. An armature composed of a rectangular frame, consisting of a plurality of parallel pieces each having a central perforation for the armature-shaft and a T-heafd at one end,

the heads being alternately arranged at op- Witnesses:

J. B. WOODSIDE, JAs. FITZGERALD. 

